package com.example.nettry.demo.demo;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;

import java.util.logging.Logger;

/**
 * @author Eastern unbeaten
 * @email chenshiyun2011@163.com
 * @date 2019/10/5 上午12:40
 */
public class TimeClientHandler extends ChannelHandlerAdapter {
    private static final Logger logger = Logger
            .getLogger (TimeClientHandler.class.getName ( ));

    private final ByteBuf firstMessage;

    /**
     * Creates a client-side handler.
     */
    public TimeClientHandler() {
        logger.info ("初始化资源");
        byte[] req = "QUERY TIME ORDER".getBytes ( );
        firstMessage = Unpooled.buffer (req.length);
        firstMessage.writeBytes (req);

    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) {
        logger.info ("推送数据");
        ctx.writeAndFlush (firstMessage);
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg)
            throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        byte[] req = new byte[buf.readableBytes ( )];
        buf.readBytes (req);
        String body = new String (req, "UTF-8");
        logger.info ("打印结果");
        System.out.println ("Now is : " + body);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
        // 释放资源
        logger.warning ("Unexpected exception from downstream : "
                + cause.getMessage ( ));
        ctx.close ( );
    }

}
